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  • Herbicide
  • AGAMOUS
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  • 1
    Electronic Resource
    Electronic Resource
    Identification of genetic factors for alachlor tolerance in maize by molecular markers analysis (1996)
    Springer
    Molecular genetics and genomics 251 (1996), S. 551-555 
    Details
    ISSN: 1617-4623
    Keywords: Key words Maize ; Herbicide ; Molecularmarkers ; Gametophytic selection ; Linkage analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Genetic factors controlling tolerance to the herbicide Alachlor in maize were localised by means of two different strategies. In the first approach, backcross (BC) plants, derived from pollen which had been subjected to selective pressure for resistance to the herbicide, were analysed for segregation distortion at 47 RFLP loci and compared to BC plants obtained from non-selected pollen. Preferential transmission of five chromosomal regions where putative QTLs (Quantitative Trait Loci) are localised was revealed in the BC plants from selected pollen. A second approach was based on a classical linkage analysis for segregation of the same set of RFLPs and factors controlling the trait, in a BC population of 210 individuals, by means of regression analysis. This study detected seven significant loci in four genomic regions. Overall, two loci revealed both segregation distortion and association with the expression of the trait, indicating linkage to genes expressed in both gametophytic and sporophytic phase. Three chromosomal regions appeared to carry factors involved in plant tolerance to Alachlor which are not expressed in pollen. Conversely, three loci were linked to factors selectable in pollen, but did not reveal significant association with tolerance in the plant in the segregating populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02173644
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Identification of genetic factors for alachlor tolerance in maize by molecular markers analysis (1996)
    Springer
    Molecular genetics and genomics 251 (1996), S. 551-555 
    Details
    ISSN: 1617-4623
    Keywords: Maize ; Herbicide ; Molecular markers ; Gametophytic selection ; Linkage analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Genetic factors controlling tolerance to the herbicide Alachlor in maize were localised by means of two different strategies. In the first approach, backcross (BC) plants, derived from pollen which had been subjected to selective pressure for resistance to the herbicide, were analysed for segregation distortion at 47 RFLP loci and compared to BC plants obtained from non-selected pollen. Preferential transmission of five chromosomal regions where putative QTLs (Quantitative Trait Loci) are localised was revealed in the BC plants from selected pollen. A second approach was based on a classical linkage analysis for segregation of the same set of RFLPs and factors controlling the trait, in a BC population of 210 individuals, by means of regression analysis. This study detected seven significant loci in four genomic regions. Overall, two loci revealed both segregation distortion and association with the expression of the trait, indicating linkage to genes expressed in both gametophytic and sporophytic phase. Three chromosomal regions appeared to carry factors involved in plant tolerance to Alachlor which are not expressed in pollen. Conversely, three loci were linked to factors selectable in pollen, but did not reveal significant association with tolerance in the plant in the segregating populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02173644
    Location Call Number Expected Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    CaMADS1, a MADS box gene expressed in the carpel of hazelnut (1998)
    Springer
    Plant molecular biology 38 (1998), S. 1147-1160 
    Details
    ISSN: 1573-5028
    Keywords: hazelnut ; Corylus avellana ; MADS box genes ; flower development ; ovule ; AGAMOUS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Hazelnut (Corylus avellana L.) is a species of economic interest that shows a peculiar floral biology. Unlike most of the angiosperms, which produce ovules during floral development such that they are ready for pollen at anthesis, hazelnut ovary development is delayed and triggered by compatible pollination. In order to elucidate the mechanisms regulating this unusual process and the role of the MADS box genes in ovary development, a cDNA library from pollinated styles of hazelnut was screened with a mixture of MADS box genes from different plant species. CaMADS1 (Corylus avellana MADS box), a floral-specific MADS box gene, was isolated, and characterized as belonging to the sub-family of the AGAMOUS genes. Northern blot, RT-PCR analyses and in situ hybridization experiments show a precise correlation between ovary development and CaMADS1 expression, indicating a role of this MADS box gene in the processes of floral organogenesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006022524708
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    Paper (German National Licenses)
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